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Is there a way to give an animation completion closure for a UINavigationController animation?

I have a line such as,

navigationController?.setNavigationBarHidden(navigationController?.navigationBarHidden == false, animated: true)

and I want to detect when it's completed.

Is there any way to achieve that?

Jeff Wolski
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senty
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1 Answers1

8
CATransaction.begin()
CATransaction.setCompletionBlock { print("Finished") }
navigationController?.setNavigationBarHidden(!navigationController!.navigationBarHidden, animated: true)
CATransaction.commit()

You can wrap it around with CATransaction.

Eendje
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  • Thanks a lot. By the way, I think navigationBarHidden booleans are not behaving as expected. What is the trick behind it? What should I observe. It feels like it's behaving on its own even when I use true or false – senty Apr 09 '16 at 03:32